if (count($supp_trans->src_docs) == 1)
{
$invoice_no = key($supp_trans->src_docs);
- $invoice_alloc_balance = get_supp_trans_allocation_balance(ST_SUPPINVOICE, $supp_trans->src_docs);
+ $invoice_alloc_balance = get_supp_trans_allocation_balance(ST_SUPPINVOICE, $invoice_no);
if ($invoice_alloc_balance > 0)
{ //the invoice is not already fully allocated